books.google.it - In Africa, where the birthrate of twins is among the highest in the world, twins can be seen as a burden to their families and a threat to the social order, or they can be seen as a gift from God and beings with unique abilities who bring about social harmony. Philip M. Peek and the contributors to this...https://books.google.it/books/about/Twins_in_African_and_Diaspora_Cultures.html?hl=it&id=Ag0uduy5bYEC&utm_source=gb-gplus-shareTwins in African and Diaspora Cultures